Hutch valve for baum jigs



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Oct. 30, 1951 w. J. SMITH HuTcH VALVE FOR BAUM JIGs Filed Oct. 6. 1949 Oct. 30, 1951 w. J. SMITH HUTCH VALVE: FOR BAUM JIGs 2 SHEETS-SHEET 2 Filed Oct. 6, 1949 /NvENTo/e; WILLIAM J.SM|TH, BY M f/ l In the accompanying drawings,

arrows;

ed valve; and

Patented Oct. 30,A 1951 HUTCH VALVE FOR BAUM JIGs William J. Smith, .Worthingtom Ohio, assignor to The Jeffrey Manufacturing rationof Ohio Company, acorpo- Application october s, 1949, semi No. 119,788

- sciims. (orcos- 455) This invention relates toa jig adapted to separate material according'to specicgravity, and

and the associated elevatorcompartment during the cyclic up and down movement-of the yjigging Other objects ofthe invention will appear hereinafter, the novel features.l and combinations,

being set forth in theappended claims. v

Fig. 1 is a sectional elevational view of a portion of a jig incorporating the features of m invention; 1 f

Fig. 2 is a sectional View showing particularly the control valve of my invention;

Fig. 3 is an elevational view Vtaken on the line vating and discharging the high gravity material delivered thereto from the screen plate I I by the high gravity or refuse control mechanism I6. The jig illustrated is primarily a coal cleaning jig rather than an ore type jig and thus the high gravity control mechanism I6 is designated as the refuse control. An ore jig, while fundamentally similar, is generally smaller and, of course, the high gravity material in the case of an ore jig constitutes the values, the low gravity material the gangue. It will be understood that the invention is applicable to either coal cleaning jigs, ore jigs, or any other type of jig.

There is a partition I'I which separates the hutch compartment I2 from the elevator compartment .E I4 and constitutes a common` wall thereof. Adjacent the bottom of the partition I'I 3|3 of Fig. l, looking in the. direction of the Fig. 4 is a View, similar to Fig..-.2, showing a modified form of control valve;

Fig. 5 is aview, similarto Fig. 3. of the. modi- Fig. 6 is a sectionalviewtaken on the line 6 6 of Fig. 5, looking in the `direction lof the The general constructionof atypical Baum jig is disclosed in the patent-toV Orval R. Strawn, No. 2,281,530,V dated April 28, 1942, to which reference is made for a more complete illustration of thel jig illustrated particularly in Fig. l of the drawings, with ertain modications lizo-incorpoi rate the features ofmy invention.

As disclosed, particularly inhsaid Figg-rl, the jig includes a main container I0 in which there is a "perforated generally* horizontal screen plate II lupon which a bed of material, such as coal Yor iron ore, is to be stratified by the cyclic lupward and downward movement of the cleaning and stratifying fluid, such as water, through said screen plate II and bed of materials supported high gravity material in the bottom stratum.

Y Below the screen plate II is a hutch compartment I2 which, as illustrated in the drawings is divided into two transverse sections by a partition I3. To the left ofthe hutch compartment I2 {there-is `an elevator compartment --I4' within `which there is a 4buckettypeelevator'itif-tonelethere is an opening I8 through which hutch material collecting in the bottom of the hutch compartment I2 can flow into the elevator compartment I4. Such an opening I8 has heretofore been. standard construction. In the Strawn patent above mentioned there is also a screw conveyer in the bottom of the hutch compartment which conveys the hutch material into the boot or bottom of the elevator compartment. Such a screw conveyer is ofttirnes not used and is not illustrated in the jig with Which my improved apparatus is associated, though, if desired, such a hutch conveyer may be used.

It has been found in practice that where there was an uncontrolled opening between the hutch compartment and the elevator compartment, such as the opening I8, there was an undesirable back flow of separating liquid from the elevator compartment to the hutch compartment during the suction stroke, during which the cleaning water flowed downward through the screen I I and bed of material thereon. This materially reduced the effectiveness thereof in that considerable of the energy of the suction stroke was employed merely to pump the water up and down in the elevator ciation with the opening I8 to permit relatively free iiow of the jigging liquid duringvthe pulsion stroke from hutch compartment I2`to elevator compartment I4 while restricting or preventing ment .i 2.

forms a part of said box 20, and the bottomr fof.,

the hutch compartment I2 directly therebelow.

A flexible valve element 23, pref`erab`ly"made of rubber material, such as ordinary rubberfbelt-4 ing, is provided, the top 'of which li's5ni'gidly.1attached as by bolted cross plate 24. The bottom edge of the valve element 23 is normally ciirved so as to have a wiping contact with 'the ad'jacent bottom portion of the compartment l2. Y'The sides of the valve element 23 overlap upstanding Iside portions of said box 2i). V

Reinfoicing ribs 26 :extend laterally downward from the lchannel 2-2 to which they are rigidly Y attached, as by welding, :and terminate just above the adjacent bottom 'wall Vof the hutch :compart- It .is evident that whenever the fluid .pressure on the Aright-hand side `of the flexible 'valve element .2-3 A(as viewed `in Fig-s. l and 2 of the drawings) is greater than on the left-hand side, valve elementia vwill swing to the left and allow Vthe fluid to flow from the hutch compartment into ithefelevator compartment. This c ondition will normally exist .duringtheY pulsion Vstroke 'or as the cleaning liquid moves 'upward through the screen Ifl and bed oflmaterial sup@u ported thereby. VDuring .the :suction stroke the .pressure .on itime vright-hand side 'of the valveele- .ment 23 will be less than on Athe leftf'ha'nd side,

'whereupon it will swing to the lief-t, as viewed 1in Figs. 1 and 2 of the drawings, :effectively :clos-, ing the control valve. I9 .and preventing the :re-

verse flow of the fluid from the elevator'compartment I4 into the hutch 'compartment S2.

InYFigs, 4, and 6 "of vthe 'drawings If-have 4ishovvn an addedstructure to sthe :val-.ve It in the, form of an .adjustable gate 27 which ,is mounted for vertical up and Ydown 'adjustment between guideways on opposite :sides thereof, placedrjn front of the ribs -26 .and vvertically adjustable by a pair Vof spaced.adjustingfscrews :and cooperat- -ing nuts 28.

kIt isobvious that lby adjusting the `gate .2T

Jth'e effective size of theropening 2 1I vmay be var'- -ablyadjusted This construction has been .found desirable -in some instances and has the flexible feature Yof providing control for the filuidno'w between the hutch compartment AI2 and the elevator compartment I4.

In `the operation ofthe jig, compressedair will be employed 'to produce the fcyclicsucceser sive up and down now tof the. jigging `{ilu-id `or water through the screen .plate II with 'the consequent stratification of the bed aof materials thereon, with the high gravity rmaterial in the bottom stratum and the low gravity materialin the top stratum. This `operation is essentially a standard one, and `the vmeans ifor,producing itA are disclosed in detail in the Strawnipatent above identified. Y Y

T he high gravity material will-fbe discharged l by the ejector I6 under 4controlof float means 'generally designated 29, Vwitlfrthe rlow'gravity g material and-some of the 4clean wateriflowing A through the adjustable height 'dischargeelipih Duringthe compression period':0,1. .nevv

upward flow of the water through the screen II and bed thereon, the rpressure on the righthand side of the partition I'I, as viewed in Figs. 1 and 2 of the drawings, will exceed that on the left-hand side, causing liquid to flow relatively freely through the check valve I9 and opening I8 into the elevator compartment I4. During the 4'suction stroke, or, as the water moves downwardly through the screen II and the bed thereon, the check valve I9 will close so as to .'.prevent or greatly restrict the reverse flow of said fluid, or., in other words, the flow of fluid from 'the elevator compartment I4 into the hutch compartmentll As a consequence there will `flee fconsiderablyiless pulsation of liquid in the elevator compartment I4, or, stated another way, therelwill be4 less variation from instant to instant inthe Vliquid level therein. One effect of this will be to require less cleaning fluid, or water. Another effect will be that the energy delivered tothe pulsating liquid in theV jigging compartment will..be more efciently employed as considerably less will be involved in periodic .A raising and lowering the liquid level in the elevator compartment I4 for no particular purpose. In short, there will :tend to be more suction on the bed because :of the presence of the valve I9, with the same amount of jigging energy employed.

'Other features of the-jig are not described in detail as they are shown in the Strawn patent hutch compartment to said zelevator compart-V above identified, and,v perse, yconstitute no part of the instant invention.

Obviously those skilled in the art may .make various changes in the details and arrangement lof parts Without departing from the spir-it and scope of the :invention asl deiined by the claims hereto appended, and applicant therefore wishes Y not to'be restricted to the precise construction herein disclosed.

Having thus described and shown an embodiment of the invention, whatit is desired to secure V'byLetters Patentof the United states is:

l. A jig including a material supporting screen, a hutch compartment below .said screen, an ele- Y vator compartment communicating with said hutch compartment, and check valve means for restricting uid fflow from said elevator compartment to said hutch compartment while providing for. relatively Vfree fluid flow from said ment. y j

v2. A jig including a material supporting screen, a hutch compartment -below said screen, an elevator compartment `comnlunicating with said hutch compartment, and check valve means for .preventing fluid flow from said Velevator comj partment to said hutch compartment while providing for .relativelyfree fluid flow from said hutchpompartment to said `elevator compart- V ment.

v3.y A jigrincludinga material supporting screen, a hutch compartment below V.said screen, an elevater compartment Vcommunicating with said hutchcompartment, and variable size check valve meansv for restricting fluid flow from said elevater compartment tol said Vhutch compartment while providing lforrelatively free fluid flow .from

said-hutch compartment to said elevator com- ,partmerithl .4. vrA jig .adaptedto stratify material in a bed yby pulsating upward and Vdownward movements of water through'saidbedincluding a jigging .compartment having avrbejd vsupporting lscreen vator having a compartment adjacent said jigging compartment, high gravity material ejector means adjacent said screen controlling the ejection of high gravity material from said screen into said elevator compartment, means providing a fluid passageway between the bottom of said hutch compartment and said elevator compartment, and a one-way adjustable check valve operable to restrict the flow of fluid from said elevator compartment into said hutch compartment during the downward movement of the water through said bed and operable to permit free flow of fluid from said hutch compartment into said elevator compartment during the upward movement of the water through said bed.

5. A jig adapted to stratify material in a bed by pulsating upward and downward movements of water through said bed including a jigging compartment having a bed supporting screen and a hutch compartment therebelow, an elevator having a compartment adjacent said jigging compartment, high gravity material ejector means adjacent said screen controlling the ejection of high gravity material from said screen into said elevator compartment, means providing a uid passageway between said hutch com- REFERENCES CITED The following references are of record in the le of this patent:

UNITED STATES PATENTS Number Name Date 152,810 Plumb July 7, 1874 2,013,414 Llewellyn Sept. 3, 1935 2,132,378 Bird et a1 Oct. 11, 1938 2,199,091 Pardee Apr. 30, 1940 2,281,530 Strawn Apr. 28, 1942 FOREIGN PATENTS Number Country Date 9,419 Great Britain of 1889 

